US565482A - mayer - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. O. F. MAYER` TYPE WRITING MACHINE.

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0. F. MAYER. TYPE WRITING MAGHINE. No. 565,482. Patented Aug. 11, 1896.

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OTTO FRIEDRICH MAYER, OF BERLIN, GERMANY, ASSIGNOR TO O. F. KINDERMANN 8o CO., OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 565,482, dated August 11, 1896.

Application led November 15,1895. Serial No. 569,123. (No model.) Patented in Germany March 15, 1895, No. 12,709; in England .Tune 29, 1895, No. 12,587, and in Belgium .Tuly 29,1895,No.116,740.

T0 @ZZ whom it may concern.:

Be it known that LOTTO FRIEDRICH MAYER, a subject of the King of Prussia, Emperor of Germany,residing at Oharlottenstrasse 4:,Berlin, in the Kingdom of Prussia, Germany, have invented new and useful Improvements in Type-Writing Machines, (for which 'I have obtained German patent, No. 12,709, dated March 15, 1895; British patent, No. 12,587, dated J une 29, 1895, and Belgian patent, No. 116,740, dated July 29, 1895,) of which the following is a specification.

This invention has for its object an improved type-Writing machine having an elastic type-plate.

In the accompanying drawings, Figure l is a plan view. Fig. 2 is a front view with the carriage raised. Fig. 3 is a vertical section viewed in the direction of arrow oo of Fig. 1. Fig. 4 is a vertical section viewed in the direction of arrow 'y of Fig. 1. Figs. 5 and G show a plan view and side view, respectively, of the adjusting-lever carrying the elastic type-plate. Figs. 7 and 8 show, on enlarged scale, the mechanism operating the'impression-hammer. Fig. 9 is a section in line o 'U of Fig. 7 and showing the left-hand part of this latter. Fig. 10 is a section in line w w of Fig. 7 and showing the right-hand part of the same. Fig. 11 is an upper view of the device for feeding the carriage, and Fig. 12 shows the same parts in another position.

The arrangement of the machine is essentially as follows: A carriage c is adjustably arranged on a spindle b in supports a. A pawl e engages in a xed rack-bar d, said pawl being movably arranged on a short leverf, which in turn is firmly connected with a spindle g, mounted on the strengthened rear part c of the carriage c. A spiral spring h, Fig. f1, presses in such a way on the pivot of the pawl e that the double hinge formed by this pawl and the lever f always assumes the position shown in Figs. 1 and 2. A bar o oscillates the spindle b and by means of a key ol may be pressed against the double hinge c fin such a Way that the latter is eX- panded. As by this means the pawl e engages in the rack-bar d, the carriage c must be moved to the right, the movement being so regulated as to be always to the extent of the width of a tooth, that is to say, the width of a letter.

By the opening or expansion of the double hinge c f the spindle g is turnedand with it the lever i, mounted on "the upper end of this spindle g. The lever i thereby presses forward, against the action of a spring Z, a bar k, adjustably arranged under the carriage c. The bar 7c has on its front end m, which has the form of a plate, a wedge-piece m', which, on the bar k being moved forward, en gages with a wedge-surface n of the impression-hammer n, which latter rocks on the spindle b. By this means the impressionhammer n is pressed down and brings the required type of the elastic type-plate r' onto the paper which lies beneath it.- IVhen the wedge-surface m has passed completely orf the wedge-surface n of the hammer n, the latter is thrown upward by the elasticity of the typeplate r', so that the wedge-surface m on its return movement slips away under the wedge-surface n without exerting any pressure onthe same.` By this arrangement an equally strong impression is obtained on the paper, it being immaterial whether the operator presses heavily or lightly on the key o.

The distance between the plate m and the under side of the carriage c is regulated by means of a screw p. By turning this screw p to the right or left the pressure of the wedgesurface m on the wedge-surface n? may be regulated at will and thereby the strength of the impression which is to be produced on the paper.

The typeplate r is carried by'a frame fr, which is made in one piece with the lever t, by which the type-plate is adjusted to the desired letters. The rear end of the frame r is connected with a circular guide-disk s, Fig. 5, which moves freely in a straight guide u, arranged on the under side of the transportcarriage c. This arrangement of making the frame r of the type-plate r in one piece with the lever t and the guide-disk s renders it possible to easily replace the type-plateby another having another pattern of type. In

order to effect this change of type-plate, it is IOO 2 BAB merely necessary to remove the inkingplate' Vhat I claim as my invention, and desire to secure by Letters Patent, is-

l. In a typewriting machine having a earriage adapted to be laterally displaced, the combination with a lever f secured to the rear part of said carriage, and With a pawl e attached to said lever, of a iixed rack d arranged to cooperate with said pawl, and a bar 0 parallel to the rack adapted to be moved against and from said rack, and arranged to aet upon the said lever and the said pawl, for the purpose as described.

2. In a type-Writing machine having a carriage adapted to be laterally displaced, an elastic type-plate held by said carriage, and ahammer adapted to act upon said type-plate, the combination with a shaft g arranged in the rear part of said carriage, a lever f secured to one end of said shaft, a pawl c at taehed to said lever, a fixed rack cl arranged to cooperate With said pawl, a bar 0 parallel to the rack adapted to be moved against and from said rack and arranged to act upon the said lever and the said paWl, of a lever t' secured to the other end of said shaft, and means for transferring the oscillations of said lever 1I upon said hammer as set forth.

3. In a type-Writing machine having a carriage adapted to be laterally displaced, an elastic type-plate held by said carriage, and a hammeradapted to act upon said type-plate,

the combination with a shaft g arranged in the rear part of said carriage, a lever t' se-l cured to one end of said shaft, and a rod 7a arranged in guides secured to the said carriage, and adapted to be displaced by said le ver, of a Wedge m fixed to said rod, a Wedge n fixed to said hammer, and adapted to be operated by said former Wedge and means for turning the said shaft simultaneously With feeding the carriage, substantially and for the purpose as described.

Il. In a type-writing machine having a horizontal spindle, a carriage adapted to be displaced upon said spindle, an elastic type-plate held by said carriage, and a hammer adapted to act upon said type-plate, the combination with a shaft g arranged in the rear part of the said carriage, a lever f secured to the lower end of said shaft, a pawl e attached to said lever, a fixed rack d arranged parallelly to the said spindle below this latter, and adapted to cooperate with said pawl a bar o suspended from the spindle b, and adapted to be moved against and from said rack so as to cause the cooperation of the said lever and the said pawl with the said rack, of a lever t' secured to the upper end of the shaft g, a rod 7s arranged in guides secured to the carriage, and adapted to be displaced by said lever fi, a Wedge m fixed to said rod, and a Wedge a fixed to said hammer, and adapted to be operated by said Wedge m; the latter being adapted to depress the said hammer, and the type-plate being adapted to raise the hammer, substantially as described.

o'rTo FRIEDRICH MAYER.

XVitnesses W. HAUPT, CHARLES H. DAY.

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