US1215102A - Type-writer. - Google Patents

Description

K. BJ'dRKSTEN.

TYPE WRITER.

APPLICATION HLED JULY 6 1915- 1,21%102. Patented Feb. 6,1917.

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TYPE WRITER.

APPLHJATION FILED JULY 6.1915.

Patented Feb. 6, 1917.

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Application filed July 6, 1915.

To all whom it may concern:

Be it known that I, KARL BJoRxsrnN, a subject of the Emperor of Russia, residing at Fontanka 17, Petrograd, Russia, have invented certain new and useful Improvements in Type-'Writers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Typewriters of the Hammond type have a I very serious drawback Which hinders them from being extensively used in offices and generally where writing is done on sheets of legal cap size or on heavy paper or where manifolding is required.

This drawback is due to the fact that when such paper is used the sheets become folded or creased, giving to the work a slovenly appearance, and use of a large number of sheets in manifolding is quite impracticable. The reason for this is that on placing the paper in the machine the sheet is first stored in a cylindrical receiver of a comparatively small diameter.

The object of my invention is to overcome this disadvantage in machines of the Hammond type by eliminating the cylindrical receiver and the invention consists in providing a special construction of hammer which will permit the insertion of the sheets between the guide and feed rollers from the rear of the machine, which is not possible with the form of hammer now in use.

In the accompanying drawings Figures 1 and 2 show a cross section and rear view, respectively, of a portion of a Hammond typewriter of known pattern.

Figs. 3 and 4 are similar views showing one form of hammer embodying my invention.

Figs. 5 to 7 illustrate a mod 5 being a rear view, Fig. 6 a plan view, and Fig. 7 a section on 1ine'A-B of Fig. 5.

As shown in Figs. 1 and 2 the sheet 1 is fed by the two feed rollers 2 and 3 of the longi-v tudinally movable carriage from the cylindrical receiver 1, in which it may assume the form indicated. The sheet is prevented from taking another direction by the whole construction and arrangement of the machine and especially that of the hammer 5 ification; Fig.

Specification of Letters Patent.

Patented Feb. 6, 1917. Serial No. 38,264.

which is formed plane strikes against the sheet whereby the latter is pressed against the anvil 7 the shuttle or type-wheel 8 of which, moves in such a manner that the proper type is brought opposite the striking face of the ammer as is well lmown in machines of this type.

According to the embodiment of the invention shown in Figs. 3 and 4 the arm of the hammer 5 is formed with a transverse slotted portion 9 through which the sheet is passed from the rear of the machine and which is of suflicient length to permit the sheet to be moved laterally with the longitudinally movable feed rollers past the anvil and hammer in the usual manner.

The same result is attained by the modified construction shown in Figs. 5 to 7 wherein the hammer 5 is mounted on a frame 12, of the form shown, which is centrally fixed on the actuating axle 6 and supported at both ends by rock arms 13. The pivots 14: of these arms have their axes coinciding with the axis of axle 6.

The arms 18 rest on springs 15 (Fig. 7) and operate toprevent the frame from bending or twisting during the movement of the hammer and insures a correct impact of the latter.

It will be clear that by constructing the hammer as herein shown and described, the sheet may be inserted in the machine so as to avoid the cylinder, and readily and accurately fed through the machine and thereby eliminate a very objectionable feature with out interfering in any way with the general construction of the machine.

y improved form of ily be substituted for the old form now in use without altering other parts of the present. machines. The storage cylinder may, of course, be dispensed with and the space occupied by it utilized for other purposes.

I claim 1. In a typewriter, the combination with a type-wheel rotatable on a fixed axis, and mechanism for laterally and longitudinally feeding a sheet past said wheel, of a hammer frame, a small head centrally mounted thereon and movable thereby in a fixed verhammer may read tical plane to and from the wheel, said frame having a transverse slotted portion adapted to permit longitudinal and lateral movement of the sheet therein.

2. In a typewriter, the combination with a type-wheel rotatable on a fixed axis, and mechanism for laterally and longitudinally feeding a sheet past the periphery of said wheel, of a hammer frame pivoted behind the latter, a small head centrally mounted on the frame and movable thereby in a fixed vertical plane to and from the wheel, said frame having a transverse slotted portion Copies of this patent may be obtained for adapted to permit longitudinal and lateral movement of the sheet therein, a central lever supporting the frame, lateral supporting arms on said frame pivoted on axes coinciding with the axis of the lever, and springs to yieldingly support said arms.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses. KARL BJORKSTEN.

Witnesses:

K. S. SININGs, F, A. LOVIAGU'INE.

five cents each, by addressing the Commissioner of Patents,

Washington, .D. C.

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