US171335A - Improvement in type-writing machines - Google Patents

Improvement in type-writing machines Download PDF


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US171335A US171335DA US171335A US 171335 A US171335 A US 171335A US 171335D A US171335D A US 171335DA US 171335 A US171335 A US 171335A
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    • H04L13/00Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02Details not particular to receiver or transmitter
    • H04L13/06Tape or page guiding or feeding devices


ZSheets-Sheet 1. R. T. P. ALLEN.
l TYPE WRITING MACHINE." N0.171,335. Patented D'ec. 21,1875.
nu @IL Fay. 2A
- ZSheets-Sheet'l R. T. P. ALLEN.
TYPE WRITING MACHIN'E. N.o.171,335.` Patented Dec. 21, v'1875.
Specification forming part of Letters Patent No. 1,171,335, dated December 21, 1875 application filed August 14, 1875.
To all whom it may concern: l
Beit known thatl, ROBERT T. P. ALLEN, of Farmdale, in the county of Franklin and in the State of Kentucky, have invented certain new and useful Improvements 'in Type- Writing Machines; and` do hereby declare that the following is a full,clear, and exact description thereof, reference being had to 'the accompanying drawings and `to the letters of reference marked thereon, 'making' a part of this specification.
` l This invention relates to certain improve-` ments in type-writing machines; anditcon` sists, first, in a novel construction and method pf operating the type rods or carriers, which are arranged in a series around a common center in a suitable support, said rods radiat-` ing` outward and upward from the `common cent-er, the lower ends carrying types representing the letters of the alphabet, the whole ,being operated bymeans of a series of vertically-working rods provided with keys on their tops, in such manner that when depressed said type-rods will be moved obliquely down- -ward toward the common center until just `above the paper, at which point they will be forced vertically down upon the same,in or- `,der to set the type squarely upon the paper, "as `fully hereinafter specified; second, in the lcombination, `with the type-keys, of certain devices for shifting the paper after` the impression `of each letter, consisting, essentially, of -a tilting table, vthrough which the key-rods` ipa'ss, and against the upper side of which the lkeys abutl at each depression of the same, secured to airock-shaft at one side, which com-A municates,`by a lever, with a lever below, carrying a double pawl, which works in a rack secured to the carriage, which moves the paper "land releases one tooth of the same at each depression of a key, allowing the table to, gmove the space of one letter, asfully hereinafter described; and, third, in the combination, with the movable carriage,asdescribed, of a device for shifting the paper when 'a line of jwriting has been finished, consisting of a roller mounted in bearings attached to the carriage, and moving longitudinally upon a 1 square journal, to one end of which is secured a toothed wheel, which is shifted one tooth by apin secured to the traveling carriage each time the same reaches the end of its Way, I
resents a transverse section of the carriage which moves the paper, and Fig. 6 a detached v view of the device for operating the shifting roller ]'ournaled thereon.
The letter `A represents a table or desk, which supports the various working parts of the apparatus. The letter B represents a seriesof type-rods arranged around a common center, C, (clee rly shown in Fig. 4,) in supports D D', arranged one above the other, and slotted for the reception of the type-rods, which radiate upward obliquely from the center C. Said type-rods are bent, as shown, at or near t-he center of the same, in such manner that as they. are moved downward toward the point `C they will move obliquely until the bent portion reaches the slot in the lower support,
in passing through which, by reason of the bend in the same, the bars will be forced downward for the remainder of their movement, in such manner as to move the type on the ends vertically toward the paper, in order to set the type squarely against the same, and make a perfect impression. The letter E represents a series of vertical rods, arranged in slots eX- tending through the upper and lower supports DV D', and providedwith buttons or keys F, attached to their tops. Said rods are connected, by means of links e, with the type-rods B, and the type-rods, by means of spring b, to the upper support D', in such manner that by depressing the' rods E the type-rods B will `be thrown obliquely downward to the `center G, andreturned, upon releasing the rods E, by means ofthe springs b. The type-rods and key-rods are arranged in three concentric'rows, and at the center is a straight vertical rod, B', mounted with va key, the purpose of which is to depress the tilting table or plate Gr, which actuates the pawl below, and allows` the paper to move the proper distance after each impression. Said plate is located directly below the keys on the. key-rods, said rods passing through openings in the same, and is secured at one side to a rock-shaft, H, journaled in standards I N, secured to a movable carriage, O, traveling between ways P-on each side of an opening, Q, in the bottom of the desk. To said ,carriage is secured one end-of a spring, R,
the other being attached to the desk; and a cord or string, S, passing over pulleys and throughthe side of the desk, whereit terminates in a button, is secured'for the purpose of drawing the carriage forward for the commencement of work.
When thus in position,vthe carriage is al- -lowed to move the distance of one letter after each depression of the key by depressing the rod B','which operates the tilting plate, and
through the intermediate mechanism the bent lever M, causing one of the jaws of the pawl to disengage the tooth of the rack N, allowing it to becarried forward, the opposite'jaw engaging the next tooth, and holding the rack and carriage until the lever is again operated. The carriage is provided with standardsTT at opposite ends, in which are journaled the rollers UV, between which the paperis carried.
,The roller V is'mounted loosely on a square rshaft orjournal, W, journaled in bearings in ,opposite sides of the apparatus, and slides thereon as the carriage is moved back and forth. 'Io one end of said shaftvis attached a toothed wheel, A', and a ratchet-wheel, B',
in which sets a pawl, O', to prevent the shaft from turning in but one direction.
- The teeth of the wheel A are beveled from Athe front to the rear, for the purpose to be presently explained.
To the front of the carriage O is att-ached a finger, D', which engages the teeth of the wheelA' when the carriage completes its forward movement, when drawn'by the string after a row of letters have been printed, and shifts said wheel to the extent of one tooth,
which carries the lpaper between the wheels forward the extent of one line, ready for the next line to be printed. f
The letter E' represents an inked ribbon l passing over the paper, being Wound on jourvnals'or rollers arranged on opposite sides of the apparatus, upon which the type on the ling shifted.v
whole arranged to operate substantially as shaft, and the finger D', arranged on and ,y
lcrate substantially as and for the purposes set forth.
show when a line is complete; and to the lower end of the lever K is secured a cord, I', passing through the side of the desk, and terminating in a button, by'means of which the lever and its mechanism can be operated to shift the traveling carriage, when it is desired, without resorting to the use of the key on4 the key-rod B', as is the case when it is necessary to move the paper the length of one line to 'commence a new paragraph, and also .to disengage the pawl from the rack toA move the carriage forward to commence a new line. K' represents a spring secure'd'to the lever K and to the desk 0r table, for the purpose of returning the said lever and the mechanism which it operates to position after beradially and obliquely` around a common cen- Y ter, in supports in which they slide, in combination with a series of vertical key-rods, the
and for the purposes set forth.
2. The combination, as hereinbefore described, of the central type-key mounted on the rod B', the tilting plate G', rock-shaft H, levers K and M, ratchet N, and spring R, attached to the traveling carriage O, for the purpose of shifting said carriage and moving the paper.
3. In combination with the movable carriage, as herein described, the rollers U V, l the latter arranged to slide on a rectangular l shaft, W, the toothed wheel mounted on saidy g moving with the sliding frame, for engaging with the wheel A' and cord S, attached to the traveling carriage, the whole arranged to op- In testimony that I claim the foregoing I have hereunto set my hand this 26th day of April, 1875. i
i A. M. GvER'roN, J. S. BULL.
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