Year: 1886

page_text: I CHARLES SPIRO, residing at Stewart Building, corner Broadway and Chambers
Streets, in the City, County and State of New York, one of the United States of
America, gentleman, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The object of my invention is to produce a machine consisting of as few parts as
possible & yet possessing the essential characteristics and capabilities of machines
having a greater number of parts, so that a practical useful type-writer having
substantial merit can be secured at a low cost.
Referring to the drawings.-
Figure, 1, is a plan of a type writing machine constructed in accordance with my
invention, one end of the machine being broken off.
Figure, 2, is a plan of the underside of the principal elements involved in the
printing, inking, and feeding mechanisms of the machine.
Figure, 3, is a side elevation of the printing, feeding and inking mechanisms, the
remaining portions of the machine being shown in vertical section..
Figure, 4, is a side elevation of the bracket and dial.
Figure, 5, is a plan and aide elevation of the inking mechanism.
Figure, 6, is a plan of the principal lever of the feed mechanism, and,-
Figure, 7, is a side elevation of the simplified bracket.
Like letters indicate like parts in all the figures of the drawings..
The frame work of the machine is a single casting, comprising the bed, A, end
brackets, A, and tie-bars, A' A³. The platen, B, having pawl and ratchet line
spacing mechanism, B₁, and thumb nut B³, is mounted in the brackets, and partly
encircled by the guide plate, B³, these parts being for the reception and feeding of
the paper as usual. A guide rod, C, having a handle, Cl, is passed through the
brackets and serves to hold the paper, X, upon the platen. Between the tie-bars
is arranged a feed rack-bar, D, pivotally mounted by means of screws, D¹, threaded.
in the brackets and projecting into the ends of the rack-bar. A projection D³, on
the rack-bar by coming in contact with a similar projection, D³, on the bracket,...
limits the oscillation of the bar in one direction... Upon the rack-bar.is mounted
a bracket, E, having a sleeve, E, perforated to embrace the rack-bar, the perforation
being, in this instance, rectangular, as is the rack-bar in cross-section. Other forms

page_text: .
:
of perforations and rack-bars may be employed, either polygonal in cross section
or circular with a groove or fin cooperating with a fin or groove in the sleeve.
Projecting from the bracket is a post, E, and at the opposite end of the bracket
a hub, E, is formed, upon which, in one instance is mounted the dial, E³, while in
the other instance, (see figure, 7,) the bracket itself is constructed as a disc for the
dial, Es, the hub, E2, being arranged on the under side thereof. At one end of the
bracket and above the rack-bar is arranged a feeding mechanism, which comprises
a lever, F, pivoted at, F, and extended to form a check-pawl, F2, which, by means
of a spring, F³, secured at one end to the stud, E', is forced into contact with the
rack-bar.
To the lever, F, is pivotally secured the feed pawl, G, which by means of the
spring, G', is forced into contact with the rack-bar when not otherwise influenced.
The spring, F³, being wide, bears upon the pin F, projecting from the check-
pawl, F. It is evident that the spring may be projected upon the check-paw!,
thus obviating the use of the pin. The printing device is a disc, H, having a
depending flauge, H¹, on the lower edge of which is arranged the printing
characters, the disc being secured to the locking wheel, I, by screws, H2, therefore
permitting of the substitution of different printing characters. The locking
wheel, 1, is acted upon by the usual spring detent, L₁, (see fig. 3.) secured to the
under surface of the bracket and projecting between the teeth of the locking
wheel, as usual. The locking lever, I', having the detent, I³, is pivoted to the
bracket below the sleeve. Projecting downwardly from the lever, I³, is an arm or
rod, 14, to which is secured an inker operating arm, L, which is bifurcated at its
ends, or, it may be otherwise adapted, to be pivotally connected with the arm, M',
projecting, from the pivoted end of the inking arm, M, which is rotatably secured.
by the screw, N. The inking pad, O, is mounted on the. pad carrier, P, pivoted to
the free end of the arm, M. A spring, P¹, normally presses upon the carrier on one
side of its pivot so as to permit said carrier to be depressed (as shown by dotted
lines,) for the purpose of applying ink to the pad and so as to yieldingly hold the
pad into contact with the printing characters. A coiled spring, K, is connected
with the arm, L, and with the sleeve, El, as clearly shown in figure, 2.
J, represents a handle, and, J¹, a pointer attached to the usual vertical shaft of
the printing disc and locking wheel whereby these parts may be rotated for the
selection & presentation of desired character at the printing field of the machine.
Eo, represents a handle projecting upwardly from the free end of the check-pawl
lever, F. From the opposite side of the lever there is a downwardly projecting
rod, F. The rod, I, is adjacent to the tie bar, A³, and the rod, F, is adjacent to
the tie-bar, A³.
The rack-bar is provided with numbers increasing from left to right, which serve
the purpose of determining the point of commencement of a line of printed matter
upon the platen.
The inker operating lever, L, is mounted upon the rod, I, by means of the set
screw, L, so that.by securing the lever to the rod in different positions the ink pad
may be made to oscillate in contact with printing characters more or less near the
printing field as desired. A stop, F7, serves to limit the movement of the lever, F,
in one direction. This being the construction, the operation being as follows:
The machine in its normal position is clearly shown in figure, 3, where the
printing disc is suspended in an elevated position above the platen by means of
the spring, F3, bearing upon the check pawl, F, and against the stud, E, so that
the free end of the check-pawl lever and its rod, F³, is pressed against the tie
bar, A³, the stops, D2, D3, determining the limit of depression of the upper end of
the bracket, & therefore the elevation of its lower end. By means of the handle, J,
the pointer, J, is turned until it indicates a desired. character, & force is applied
in the desired direction. on said handle so as to depress that end of the bracket at
which the handle is located.
Such depression causes the rack-bar to oscillate or rock on its pivots, and the
rod, F³, to bear against the tie-bar, A²

page_text: The upper end of the bracket moving in a circle, the centre of which is the centre
of the rack-bar, the rod, F5, cause the handle, E, and the free end of the check-
pawl to move away from the rod, A', by reason of the constant contact of the
rod, F, with the rod, A³, the former being bent under the latter so as to lift the
check-pawl, F, out of connection with the rack-bar and against the pressure of
the spring, F. This movement of the free end of the lever, F, draws the pawl, G,
to the right, (figure, 1,) and upon the sleeve, E¹, and out of connection with the
rack-bar and over a distance of one tooth thereof. By the same depression of
the bracket the rod, I', bearing against the tie-bar, A³, causes the lever, I', to move
into a position away from the sleeve and substantially indicated by the line, a,
figure, 2; this causes the lever, L, to take the position of dotted line, b, and the
arm, M¹, to take the position of dotted line, c, and the inker arm and pad to take
the position indicated by the dotted line, d, thus removing the pad from over the
printing field and at the same time distributing ink upon the character to be
employed and the characters adjacent thereto.
When the power employed to depress the printing disc is removed, the reaction
of the spring, F, upon the check-pawl, F', elevates the bracket to the position
shown in figure, 3; first the spring, K, acting upon the arm, L, returns the inking
mechanism and the locking lever, 12, to their normal positions. When the printing
disc is depressed the locking lug, I³, enters between the teeth of the locking wheel
to secure a proper alignment of the work.
.
A stud, Q, may be secured by a screw or otherwise to the bracket just over the
rack-bar sleeve, so that by placing the thumb against the same and by means of a
finger depressing the handle E6, the check-pawl lever may be depressed so as to
throw both pawls entirely out of connection with the rack-bar, and thus permit of
a movement of the carriage from right to left to begin a new line of work. This
stud, Q, may, however, be entirely dispensed with and the thumb be placed against
the handle, J, while the finger depresses the handle, E, for the purpose described.
I therefore illustrated figure, 7, without a stud thereon for the purpose
mentioned.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
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