Improvements in Kinematographs, Kinetographs, and like Apparatus.
Year: 1896

page_text: Date of Application, 27th Mar., 1896-Accepted, 27th June, 1896
COMPLETE SPECIFICATION.
Improvements in Kinematographs, Kinetographs, and like
Apparatus.
We JOHN HENRY RIGG, Electrical Engineer, of 43 Skinner Lane in the City
of Leeds, in the County of Yorkshire and ERNEST OTHON KUMBERG, French
Civil Engineer, of 23 Brooke Street, Holborn in the City of London in the
County of Middlesex, 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 improvements in the construction of kinematographs,
kinetographs and like apparatus and is as follows:-
A bobbin or bobbins (on which the film or films are wound in any suitable
manner) being provided with a brake wheel or wheels A. Fig. 1., to which a brake
or brakes are applied by means of a lever or levers B, pivotically mounted at C
and at the opposite end from the said brake is pivotically mounted a small roller
or rollers or wheel F, the said roller or wheel being preferably constructed of
aluminium or a similar substance having very little inertia. The said lever,
carrying the beforementioned roller or rollers, can be made to apply the brake to
the wheel A by means of a weight or weights or by means of a spring as shewn
at D; or in place of the beforementioned brake and brake-wheel, we may use a
ratchet wheel, or wheels, into which a tooth, or teeth, fixed on the lever B
engages as shewn in Fig. 2.
The action of this improvement is as follows:-
When the film or films is caused by means of suitable mechanism to travel in the
direction shewn, the lever B is raised at the end where the roller or wheel F is
mounted, thus releasing the brake or tooth and allowing bobbin A to turn until
lever B descends sufficiently to apply brake or tooth thus preventing bobbin
unwinding further.
The said bobbin revolves ou a shaft or spindle as shewn at Fig. 3, the said shaft
or spindle being fixed at one end only, the other end being free to allow the bobbin
to be taken off and replaced. The said spindle G has a groove or grooves turned
at its outer end so that a small lever H, pivotically mounted at I, fits into said
groove & when closed prevents the bobbin from sliding off the shaft or spindle yet
allowing it to revolve freely.
The beforementioned film or films are caused to travel or unwind from the said
bobbin Figs. 1. 2 & 3 by means of a sprocket-wheel or wheels provided with teeth
fitting into perforations in said film or films in the usual manner, the said
sprocket-wheel or wheels being caused to rotate intermittently by means of a
worm-wheel K. Fig. 4. with regular teeth or K. Fig. 5. in which teeth are irregular.
The said wheel or wheels K. Figs. 4 & 5 being caused to move intermittently by
means of a worm L. Fig. 4. in which the angular portion of the teeth of the worm
only occupy a very small portion of the circumference, the rest of the circum-
ference having the teeth continued as rings at right angles to the shaft, or we may
ase a small portion or portions of a worm, the rest of the wheel consisting of a
olain ring or rings of a larger diameter than the said portion or portions of a
worm shewn at M. Fig. 5. or in place of the plain rings of larger diameter than
ection of worm, this may be made in the form of a groove & the worm-wheel
provided with projecting teeth fitting into said groove.

page_text: The action of Figs. 4 & 5 is as follows:-
The worm L. L. Figs. 4 & 5 upon being revolved will hold the worm-
wheels K. K. till the said angular teeth or portions of worm engages in teeth of
said worm-wheels causing them to turn sufficiently to bring the film into the
required position & then when entering on the plain ring or rings beforementioned
at right angles to shaft it locks worm-wheels K. K. when film or films remain
stationary till the worms L. L. have turned till said angular teeth or worms
engage with wheels K. K. again causing them to move in the manner before-
mentioned, this movement being repeated till the whole of the film or films are
used.
We do not confine ourselves to the use of one set of angular teeth or segments
of a worm, we may use two or more at angles in opposite directions, thus giving to
the worm wheels a swinging motion, such swinging motion being used to operate a
shutter in addition to the worms provided for the sprocket-wheels.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
I. In a kinematograph, kinetograph and like apparatus having a brake and
brake wheel operated by the film or films Fig. 1. substantially as set forth.
II. In a kinematograph, kinetograph and like apparatus having a tooth and
ratchet-wheel operated by a film or films substantially as set forth Fig. 2.
III. In a kinematograph, kinetograph and like apparatus having a drum or
drums with the locking device substantially as set forth and shewn in Fig. 3.
IV. In a kinematograph, kinetograph and like apparatus having a worm-wheel
& worm with angular teeth on a small portion of the circumference substantially as
set forth & shewn at Fig. 4.
V. In a kinematograph, kinetograph and like apparatus having a worm wheel
and worm having one or more plain rings with a section or sections of a worm
substantially as described and shewn in Fig. 5.
VI. In a kinematograph, kinetograph and like apparatus having the combination
of brake and brake-wheel, or ratchet and ratchet-wheel with bobbin and worm-
wheel and worm substantially as described and shewn in the accompanying
drawing.
Dated this 25th day of March 1896.
JOHN HENRY RIGG.
ERNEST OTHON KUMBERG.