A New or Improved Means for Giving Intermittant Motion to a Strip or Film for Taking or Exhibiting Photographs.
Year: 1896

page_text: Date of Application, 19th Feb., 1896
Complete Specification Left. 17th Dec., 1896-Accepted, 13th Feb., 1897
A New or Improved Means for Giving Intermittant Motion to a Strip
or Film for Taking or Exhibiting Photographs.
I, HENRY WILLIAM SHORT, 65 Chancery Lane, London, do hereby declare the
nature of this invention to be as follows:--
This invention relates to a new or improved means for giving intermittant
motion to a strip or film for taking or exhibiting photographs and the same is carried
out as follows:-
The strip or film is provided with perforations near each edge of same. The strip
or film is carried upon a spool or holder and passes over a roller having projections
or pins which correspond with the perforations near the edge of the strip or
film. This roller is given an intermittant motion by being operated by a toothed
wheel carried upon the spindle which carries the drum over which the strip or film
passes; said toothed wheel being operated by a helix so arranged upon a spindle that
there is an interval between the time of contact of the two ends of the helix with the
teeth upon the toothed wheel aforesaid. The strip or film is wound up after
exposure upon a spool driven by a band or belt actuated by the toothed wheel which
is caused to rotate by the helix. Upon the spindle carrying and operating the helix
a perforated diaphragm is carried, the perforations being so arranged that an
exposure is obtained at the time when the film is stationary owing to the difference
or interval of time between the contacts of the ends of the helix. Suitable brakes are
provided to regulate the motion of the spools. When it is desired to exhibit the
pictures upon a strip or film the same may be projected upon a screen by means of
fight or viewed through a suitable opening or aperture in front of the rotating
disc or diaphragm.
1000
E. EATON.
Agent for Applicant.
COMPLETE SPECIFICATION.
A New or Improved Means for Giving Intermittant Motion to a Strip
or Film for Taking or Exhibiting Photographs.
I, HENRY WILLIAM SHORT, 65 Chancery Lane, London, 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 a new or improved means for giving intermittant motion
to a strip or film. for taking or exhibiting photographs and the same is carried
out as follows:-
The strip or film is provided with perforations near each edge of same. The strip
or film is carried upon a spool or holder and passes over a roller having projec-
tions or pins which correspond with the perforations near the edge of the strip or

page_text: film. This roller is given an intermittant motion by being operated by a toothed
wheel carried upon the spindle which carries the drum over which the strip or film
passes said toothed wheel being operated by a helix so arranged upon a spindle that
there is an interval between the time of contact of the two ends of the helix with
the teeth upon the toothed wheel aforesaid. The strip or film is wound up after
exposure upon a spool driven by a band or belt actuated by the toothed wheel
which is caused to rotate by the helix. Upon the spindle carrying and operating
the helix a perforated diaphragm is carried the perforations being so arranged that
an exposure is obtained at the time when the film is stationary owing to the difference
or interval of time between the contacts of the ends of the helix. Suitable brakes
are provided to regulate the motion of the spools. When it is desired to exhibit
the pictures upon a strip or film the same may be projected upon a screen by
means of light or viewed through a suitable opening or aperture in front of the
rotating disc or diaphragm. In order that my invention may be fully understood I
will now refer to the annexed drawings in which
Figure 1. is a side elevation showing my invention.
Figure 2. plan view of same.
Figure 3. end elevation showing rotating disc or diaphragm.
a is the rotating disc or diaphragm having the apertures 6 in same. This disc a
is carried upon a spindle c which carries the helix d which engages in a toothed
wheel e secured to the spindle f to which is attached the drum g having point or
projections at each side of same said points or projections engaging in apertures
in a band or stripi upon which the photographs are taken. This band or strip is
carried upon a spool which rotates upon the bearing k and is controlled by the spring
brake l.
The band or strip is wound upon the spool m after exposure said spool being
rotated by the belt n which is driven by the pulley o attached to the spindle f
It will be seen that owing to the helix d being so shaped as to leave an interval
between the engagement and disengagement of the ends d' and that the toothed
wheel e will have an intermittant motion, that is, the film, band or strip will be
stationary during the exposure through the aperture in the disc or diaphragm a.
Any convenient form of lens may be used before the diaphragm a. The spindle c
may be rotated by any convenient power; p being a pulley for transmitting the
rotation to same.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
1. The combined construction and arrangement of the various parts substantially as
described and illustrated.
2. In apparatus of the class herein described, a spindle carrying a helix so arranged
that there is an interval between the engagement and disengagement of the ends
of same with the teeth upon a wheel which operates the drum over which the
band or strip passes, said spindle carrying a perforated disc or diaphragm, the band
or strip being carried and unwound from a spool controlled by a spring brake said
band or strip having perforations at or about one or both si ies of same into which
points or projections upon the drum over which it is passed engage and being then
wound upon a spool driven by a band which passes round pulley wheels upon the
spindle carrying the toothed drum and the spindle carrying the winding drum.
Dated this 17th day of December 1896
E. EATON.
Agent for Applicant.