Improvements in Perforators used for Transmitting Telegraphic Messages and Cablegrams.
Year: 1894

page_text: Date of Application, 14th July, 1894
Complete Specification Left, 13th Apr., 1895-Accepted, 13th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in Perforators used for Transmitting Telegraphic
Messages and Cablegrams.
HENRY WHAWELL of 11 Aldebert Terrace Clapham Road S.W. Scientific
Instrument Maker do hereby declare the nature of this invention to be as
follows:-
This invention relates to perforators used in transmitting telegraphic messages
and cablegrames, and has for object to provide a new feed arrangement which
allows of a more simple and distinct method of perforating the dots and dashes.
Hitherto the process has been to feed the paper by a spur wheel and levers.
By my arrangement I do away with this spur wheel and work the feed by means
of a rachet wheel and friction roller both working on the same axle the paper
passes and is held down in its place by another small roller immediately over it
and above this roller is a small spring bearing on it (the top roller).
By my arrangement I get 16th for the space oth for the dot, and th for
the dash besides allowing further space for the punches and obtaining longer
dashes and by my improved feed the centre line of holes can be dispensed with
or not.
Improvements in Perforators used for Transmitting Telegraphic
Messages and Cablegrams.
HENRY WHAWELL 11 Aldebert Terrace Albert Square Clapham Road
London S. W. Scientific Instrument Maker 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 :-
This invention relates to perforators used in transmitting automatic telegraph
Bignals and cablegrams. It is used to prepare the paper-tape for automatic
transmitter. Hitherto the paper has been fed by a spur wheel and levers. By
my invention I do away with the spur wheel and work the feed by a rachet
wheel and friction roller both working on the same axle. The paper passes over
this roller and is held down in its place by a jockey roller covered with india-
rubber to give a better grip on the paper; the roller is held down by a spiral
spring. By this arrangement I am able to do away with the centre line of holes
and the centre punches, having for the space 76 for the dot and
the dash, the object being to punch elongated perforations in the paper so as to
make longer and more distinct contacts and also to prevent the spaces between the
perforations from breaking away whilst being passed through the transmitter.
do not confine myself to the above measurements, as by altering the diameter of
the friction roller works more or less.
for
I

page_text: In the accompanying drawings"
Figure I is a plan. C₁ C' and C³ are three keys which work three levers as in the
well-known Wheatstone perforator. C¹ is used for the space, C for the dot
and C for the dash.
Figure II is an inverted plan D' 'D' D³ are the key levers which work on at an
axle at D. At right angles to these. devers are two other levers E and E'.
F is a
Pivoted to lever E is a long paul H which works the rachet wheel feed.
spring which causes the lever E to press on, the adjusting screw in the cock G ;
the lever E' is. used for locking the feed, hereafter to be specified.
Figure III is an elevation showing the 'space lever D¹ passing over, the dot
lever D' which is pivoted between D and D. H is the long paul I and J are
two rachet wheels both having, the same number of teeth; those of one bevelled off
in, the reverse direction to the other, I working the feed. and J used for locking.
K is a small cranked-shaped lever with guide roller attached. By means of a
spring R' (Figure I) this roller presses on the paul H and causes the paul to be
pressed into the teeth of the rachet wheel is the locking piece and catch which
the lever E¹ presses into the rachet wheel J. L. is a friction roller. "L" the
jockey-roller between which the paper passes. V is the spiral spring which holds
the jockey roller down. P and P₁ are the punches; P punches the dot and P
the dash.
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Figure IV is an end view on A. I is the feeding rachet wheel, H the long
paul and H' is another paul which prevents the rachet wheel going backwards.
Kis the cranked shaped lever and guide roller.. D' D2 and D³ are the ends of
the key levers. When a space is required the lever D₁ presses on the lever E' and
raises the paul H. one tooth in the rachet wheel.I. When the key is relaxed the
spring F pressing on the lever E causes it to move back on to the adjusting screw
in the cock G. The paul H pulls the rachet wheel round with it one tooth, the
friction roller feeding the paper to. The screw in the cock G adjusting the
movement so that the paul H¹ just presses into the tooth of the rachet wheel so
that there is no back-lash. When a dot is required the lever D² causes the
paul H to be raised two teeth in the rachet wheel and at the same time the dot
punch (Figure III) punches the paper and when released the friction roller
advances the paper 1. When, a dash, is required, the lever D³ causes the
paul H to be raised three teeth in the rachet wheel and also the dash punch P¹
(Figure 111) and the paper is advanced
Figure V is a view on B. Lis. the friction roller, and L the jockey roller
O is a guide roller. The paper passes over this roller and then between the punch
plates N and N' and then between the friction roller and jockey,roller. The
roller O moves on a crank which is attached to a steel axle, Round the axle is a
frame.
spiral spring, one end being fixed to the axle, the other to the side of the
The crank moves between two stop-pins. When any extra strain comes ou the
paper, such as the sudden starting of the paper wheel, the roller and crank move
toward the punch plates. When the strain is relaxed the spring on the same
are the two
axle causes the crank to move back on to a stop pia. P and P
punches. Jis the locking rachet wheel. J is the locking piece and catch. E' is
the locking lever. D D D are the key levers.. When either of these levers tare
pressed down the lever E' presses the catch (in the catch piece J¹) into the teeth
of the rachet wheel. J and locks the feed until the punches have released themselves
out of the paper, thus preventing the feed from working until the paper is free to
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Figure Vis a section, of the coyer R and shoot where the punchings rise and
are forced out; it is fixed over the top, punch, plate. This cover is bevelled off
immediately..over the dash hole, and, also opens, outwards towards the shoot-as
-shown in Figure Is As each punching, rises up it comes against the bevel which
causes it to be forced towards the shoot where they drop under the perforator;
Figure VII shows a piece of paper with the elongated perforations as punched
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page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A perforator with a rachet wheel and friction roller feed wherein the centre
line of holes can be dispensed with at option.
2. A perforator with a rachet wheel feed working by means of a long paul shaped
as in Figure IV whether arranged to work vertically or horizontally.
3. A perforator with the following combinations :-
(i.) Crank shaped lever and guide roller (Figures 3, 4).
(ii.) Locking piece, catch and lever, (Figures 3, 5).
(iii.) Three key levers (Figures 2, 3).
(iv.) Jockey roller covered with india-rubber (or friction roller covered with
india rubber).
(v.) Bevelled cover and shoot (Figures 1, 6).
10
4. A perforator working for space for dot and for dash and
punching elongated perforations. I do not contine myself to these exact measure-
ments, as by altering the diameter of the friction roller, the paper is fed more
or less.
Dated this 13th day of April 1895
HENRY WHAWELL.