improvements in Telegraphic Recording Instruments.
Year: 1886

page_text: improvements in Telegraphic Recording Instruments.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of
Patent Agents, do hereby declare the nature of this Invention (a communication
to me from abroad by The New Haven Clock Company (a Corporation organized
under the Laws of the State of Connecticut) of N° 16 and 18 Park Place in the
City, County, and State of New York United States of America), and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This Invention relates to sundry improvements in Telegraphic recording
instruments which are instruments for printing or marking messages upon strips
of paper the marking instruments indenting a strip which is fed through the
machine by clockwork.
The first part of the present Invention consists in making the indenting roller
which is carried by the armature lever adjustable on said lever for the purpose of
regulating the depths of the indentations produced in accordance with the size of
the indenting roller, thickness of paper, or thickness of feed-roller.
Secondly, the Invention consists in making the feed lever that is to say, the
lever which locks and releases the clock work, in two parts of which one is
adjusted to regulate the stroke of said lever.
Thirdly, the Invention consists in constructing a paper guide of two sliding
cheek pieces fitted upon a right and left screw as hereinafter more fully stated.
Fourthly, the Invention consists in a new manner of hanging the upper feed
roller so that it can be adjusted by one screw; and-
Finally, it consists in rigidly connecting the spring of the reel shaft to the
washer, all as hereinafter more fully described.
"
Reference is to be had to the accompanying drawings forming part of this
Specification wherein Figure 1. represents a vertical longitudinal section of the
improved Telegraphic. recording instrument. Figure 2 a detailed face view of the
feed rollers. Figure 2ª is a detailed section on the line K K Figure 1. Figure 3
LD.

page_text: a top view of the instrument. Figure 4 a cross-section
Figure 5 a section on the line C C Figure 3.
UL
B are
To
In the drawings letter A represents the box or case of the instrument;
the electro-magnets secured therein. C is the armature lever pivoted at a to the
upper side of the box or case A, which armature lever is moved up and down by 5
the joint action of the electro magnets, and of the spring b. D is the lever called
the "feed lever" which locks the escapement d of the clockwork which is
contained in the case A and which lever, when moved on its pivot, releases said
escapement and lets the clockwork feed the paper. E is a lever pivoted at e in the
removable end portion of the case A so as to be directly above the lever D and 1
below the armature C. This lever E is hollowed on the under side (see Figure 2º)
and receives in the hollow the upwardly projecting rear, or outer, end of the lever D
and also the front part of said lever D where it enters a groove in the front
end of the lever E. The armature C has a downwardly extending pin f which
bears on the lever E. The lever E is removable with the part X of the box and
leaves the lever D always in the box. Moreover, the lever E is always below the
pin fand prevents any strain of the armature lever while inserting the part X.
Above the front or inner end of the lever E there is a screw g in the cover of the
case A which regulates the upward throw of the front part of said lever and also
that of the lever, D. By making this feed lever D. practically of two parts,
inasmuch as lever E is part of it, I am enabled to regulate its stroke with the
utmost precision, and thereby also the action of the clockwork on the paper.
the front, or inner, end of the armature lever C is fastened by screw h the
extension piece i in which the indenting roller j is hung, said indenting roller
being a tool for marking the paper F. The extension piece i carries the screw
which bears upon the front end of the lever C, and by means of which the height
of the roller can be regulated with great nicety. The paper F is drawn from
the reel G over the paper guide H and thence by two feed rollers I and J which
at the proper time are turned by the clock-work. The indenting roller ; is
arranged to strike the paper as it lies on the roller I immediately before being
grasped by the roller J. The roller J is hung in the box or case A, but the roller I
according to this Invention is hung in the frame L that consists of two upright
The pin n
Bide-pieces m m the lower horizontal bar n and the upper spring o.
serves as a pivot for the frame L holding it in the box A and the spring o unites
the cheek pieces m on top, all as shown in Figure 2. The frame L thus constructed
is beneath the stationary cross bar p that is firmly supported on the box A, and
this cross-bar has in its middle a screw q which bears on the middle of the spring b.
By means of this single screw q the tension between the rollers I. J is regulated
and the upper roller I is, so to say, spring supported allowing it to yield readily
to inequalities in the thickness of the paper, in other words, to be self-adjusting.
The paper guide H consists of two collars r r which are fitted upon the rods that
is hung in upright lugs of the box or case A. The rod s is screw-threaded near its
end, as shown in Figure 5, one thread being right, and the other left, handed and
the collars are correspondingly threaded to fit said screws. Each collar is
moreover notched at its circumference to straddle the bar p (see Figure 1) which
prevents it from turning. Hence, when the pin 8 is turned by a suitable handle
which it carries the two collars rare screwed to approach and recede from one
another and set the requisite distance apart for guiding the paper F between them.
The reel G is hung on a pin or shaft M (see Figure 4) which turns in a bracket N
that projects from the box or case A. The shaft M carries a friction spring t which
is to give tension to the reel. Heretofore this friction-spring, which ordinarily is
a coiled wire spring, was made to bear against a loose washer which in turn was
in contact with the reel. The difficulty with this arrangement was, that the
washer and reel were apt to turn together against one end of the coiled spring sc
that thus the contact with the latter was one sided, and not sufficient to exert the
proper tension. According to this Invention, the washer u is rigidly caught to
the end of the spring t so that the reel G in revolving will be unable to cause the
8
1
1"

page_text: washer to turn with it, and will be subjected to the frictional contact with the
whole surface of the washer.
I do not claim adjusting a marking-tool in an armature lever. The problem in
this case was to adjust a marking-roller which is hung in a rigid block or piece.
Having now particularly described and ascertained the nature of the said
Invention; and in what manner the same is to be performed I declare that what
I claim is;-
1st In a telegraphic recording instrument, the armature lever C combined with
the adjustable extension piece i which carries the rotary indenting roller j and
with the holding screw h which connects the parts C and i and with the adjusting
screw which serves to tilt the part i into the desired inclined position, substantially
as, and for the purpose, specified.
2nd In telegraphic recording instrument the feed lever D combined with the
lever E, adjusting screw g, and with the armature lever C, substantially as, and
for the purpose, shown and described.
3rd The paper guide H constructed of the threaded and notched collars r r right
and left screw 8 and stationary bar p as specified.
4th The combination of the feed rollers I J with the frame L, in which the
roller I is hung, spring o which constitutes the sole upper portion of the frame L
and with the stationary bar p and central adjusting screw q, as set forth.
5th The combination of the reel G, its supporting shaft M. and mechanism
substantially as described for revolving it, with tension spring t, and washer u, the
said spring and washer being rigidly united and held in the non-revolving shaft M,
substantially as herein shown and described.